Establecimiento y desarrollo de la dominancia folicular bovina. Revisión

ABSTRACT: The bovine folículogénesis process is presented during the prepuberal, puberal, postpartum anestrus, estral cycle and early gestation periods. The folículogénesis is a dynamic process characterized by an accelerated proliferation and differentiation of the follicular somatic cells. The follicular development supplies and optimum ambient for oocite maturation, ovulation and fertilization. The folículogénesis is characterized by the development of follicular waves. Each wave is composed by a cohort of follicles that had left their “resting” state and begin to growth temporary associated to an increase of follicle stimulant hormone concentration (FSH). The recruited follicles, with diameter of approximately four mm, develop with a similar growth rate during the first three days until reach a diameter of approximately 8 mm. From this moment, a follicle of the cohort that had potentially to develop morphological and functional dominance continues to growth while the others return and turned subordinated. In this process mediate gonadotropin and gonadals hormones associated to several ovarian proteins such as activines, inhibinas and growth factors, that act in endocrine, autocrina or paracrine form to stimulate or prevent follicular development. It is not known the exact mechanism that establishes the follicular dominance.

• Autores: Henao Restrepo, Guillermo; Trujillo, Luis E
• Tipo de recurso: Review article
• Fecha de publicación: 2000
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/7186
• Acceso en línea: http://hdl.handle.net/10495/7186
• Palabra clave: Bovinos; Reproducción animal; Bovine; Fase folicular
• Rights: openAccess
• License: Atribución-NoComercial-CompartirIgual 2.5 Colombia (CC BY-NC-SA 2.5 CO)